Bicycle-sled.



F. X.v FRANK.

BICYCLE SLED.

APPLICATION HLED IAN.29, 1918.

Patented Juno fk, 1918* 2 SHEETS-SHEET WITNESSES www F. X. FRANK.

BICYCLE SLED.

APPLICATION FILED 1AN.29. |918.

l 6,22% Patented June 4, 1918.`

INVENTOR WVN f, bsses 4 95%1120151 Eid/1%',

M '3L @Lm /z/ l I y ATTORTEY rnAiToIs Xl rnANi, .or wAnxniiroN, oN'rAieio, CANADA.

y nierstenen Aplpncauonnieiranuaryee,191s. serieinaeiitsl e To all whom/it may concern.' i

Be it `known that I, FnAncis FRANK, a subject of the King, `of `Great Britain, resid: ing at ialleijton," in the *Rifovince 1of Ontario and Doniinionof Canada, have invented certain new kand iiseful Improvements in structioninto a vehicle specially,adaptedfor Y traveling on icy .oislippery surfaces. i Qn@ 0f .the mais Objects 0f the invention is to provide a device of ,the Vcharacter stated of simple construction and operation which hier .be iloduee'd at lrelffitvelvsrea1LeQSt-v i Arfurtherobject is to provide front and rear e runners which may :be readily applied to bicycle Another nbietfs .to Providemeens .for .applying the ruimere .t0 .ai bicycle .O f

standard construction without necessitating any variations in the striictvui'epof ithe bicycle itself, `Further lobjects will appear "frointhe detailed description. i i i `In the drawings: e n e i Figure 1 is `a side .View ,of a lbicycle sled constructed in vaccordancei withniy invention:

Fig. 2

Fig. 3 is a front view ofthe front runner. Fig. i is a fragmentary detail perspective of the means for .securing the front runner to the front hub, Fig. 45 is aperspective detail of the securing and supporting plates for ,the ,p bach runner. f Fig. 6 is a side view oithe saine as applied.

Fig.` 7

frame. e

The bicycle frame' designated generally by A is of standard construction being provided with the front fork B having a standard extending through the front sleeve C t0 which the handle bars D are secured in the usual manner for steering purposes. A seat E is mounted in'the seat post F the lower end of which is secured to the inclined Jframe bar G, the pedals H being rotatably supported .at the point of juncture between the standard and this bar for operating the sprocket wheel I so as to rotate the rear wheel J by means of sprocket chain l" `Speciiicatien ci Lettersatent.

`projecting .gripping studs 2.

p is .a perspective sideview-oi the back runner.

is ,a detail Yof a modiiied means for i, securing the back runner tothe bicycle f Patented J une d, 1918.

` K in` the well known manner, this wheel being rotatably supported inthe back fork L bracedbv the brace bars M. w

Infapplyinginy inveiitioii,tlie usual pneui matic tire is removed from the wheel and is replaced byaftii'e 1 of wood or other suitable material provided with `the radially provided at each end with an offset ear 3, these ears being provided with suitable apertures ,to receive asecuring bolteniiiserted therethrough, this `bolt serving to secure the tire `tightly about thewheel, andthe ears of lugs Bcoperating to forni a gripping` flug similar to .thelugs 2. At thevertex `ot This Atire is the angle formed by thebars of fork L andi brace bars M, I provide two securing and supporting plates 5 and G. `".lheinner {plate 5 is provided with inclined grooves 7 and `8 the inner ends ,of ,which converge toY .form

asingle groove i9 which constitutes a stemf of a -Y iorined by thel grooves 7, 8, andw9.`

These grooves are adaptedto snugly receive i the rearward .portions ofthe frame bars L e.. and. M, The outer plate 10 iitsz snugly against the outer surfaces oi' the frame bars and is secured tothe inner plate by means of spaced bolts 1l secured ,throughalnedopenings 12 and 13 in plates i10 and, respectively, the openings 12 being `counter-sunk, and the heads .of the bolts 11 .being :shaped so as to fit snugly into the saine, thefouter surfaces of the heads being flush` withthe outer surface ofv plate 10., The plates are also provided with` central openings 14;

which are in alinement when the Plates arci` in `operative position.` Plates 5 and lithus w provide a clamp at each Side Off itlie fork L,

each c lanip being composed' of tivo plates having alined openings 14. These clamps which are in alineinent transversely of the` `forli are adapted to receive a securing axle 15 which is inserted through the alined pairs of plates. This axle is also inserted through `bracing disks 16 provided at each side of the back runner 17. This runner is a double runner being composed of the spaced inembers 1S the forward portions of which are of semi-elliptical outline `and are reduced in height to avoid interference with the pedals of the bicycle, which are connected by the cross braces 19 and 20 and the cross bars 21 and 22. The disk 16 is secured to the upper bar 18 of member 18 slightly in advance of theV center thereof, the upper ends of the inclined brace bars 23 being also secured to this disk, the lower ends of these bars being secured to the runner 2a in the usualinaimei; The disks 16 are provided with central openings which are in aline` ment transversely of the rear runner 17.

When the runner is in 3ro 3er Josition the inner faces of disks 16 fit snugly against the outer faces of disks 10, and the axle 15 is then passed through alined` openings in all of these disks and secured therein by means of nuts threaded on the ends of the axle, or in any othersuitab'le manner. By this construction, the rear runner 17 is secured to the back fork L for rocking movement about the axle 15. A coil tension spring 26 has its lower end secured to the cross bar 22,

andi its upper end secured, as at 27 to the brace bar M. This spring acts to normally maintain the rear runner 17' in a substantially horizontal position, while permitting rocking movement of the same about shaft 15 so as to accommodate `passage of-the runner over any unevenness in the surface upon which the vehicle travels, `or obstacles which may be encountered. This spring also acts toabsorb, to a large extent, all shocks and jars due to unevenness in the traction surface, thus producing a very easy riding vehicle.

Alfront runner 28` is mounted in front fork B. The lower bar 29 of this runner is braced by the downwardly and inwardly inclined brace bars 30 which are secured toylgether` attheir upper ends by a bolt 3l inserted through the same. These `bars are placed over the fronthub 32 adjacent each movement of the front runner is eectually prevented.` The rearward end of upper bar 28L of runner 28 is secured by a U-clip 36 to Copies of this patentmay be obtained for five cents each, byf` addressing: the

Washington, D. C.

the hub 32. Theupper bar 28L is a continuation of the lower bar, being connected thereto by the forward arcuate portion 28', a swivel member 37 is pivotally secured to bail 28a adjacent the forward end thereof. A cable38 is secured to swivel member 37 and to the forward end of a tension coil spring 39 the upper end of which is secured to a collar tOimounted on the lower end of sleeve C. By this construction, the forward runner is mounted in the front fork B so as to be rockablein the same, being normally maintained in a substantially horizontal position by the tension spring 39p. This ruimer may be turned in either direction laterally by means of the handle bars/Dsc as tosteer the sled in the same manner as abicycle is steered.`

What I claim is: j

`1. 'In `a bicycle sled, a frame provided With a front fork and a downwardly and rearwardly inclinedback fork, brace bars extendingrearwardly of the frame and secured at their "rearward ends to the lower endsof the bars of the rear fork, clamps secured to the adjacent end portions'of the bars of the fork and said brace bars, said clamps being provided with openings in` ahnement transversely ofthe fork, a drive wheel rotatably mounted in the rear fork,

a rear ruimer rockablymounted on the rear fork, and a runner rockably mounted n1 the` front fork. f

2. In a bicycle sled, a frame, a front fork and a rear forkcarried thereby, clamps detachably secured to the said rear forks adjacent the lower ends thereof and provided with apertures in alinement transversely of the fork, a supporting shaft mounted in said clamps, a drive wheel rotatably mounted on said shaft, a back runnerrockably secured on said shaft, and a front runner rockably mounted in the front fork.

In testimony whereof I affix my signature in presence of two witnesses.

lFRANCIS X. FRANK.

Witnesses:

A. COLLINS, 4 M. VRoJUsoRE.

Commissioner of Patents, 

